Home / 31,720.08-47,580.12-10,656.12

Finding the Fourth Proportional to 31,720.08, 47,580.12 and 10,656.12

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Solution

The fourth proportional to 31,720.08, 47,580.12 and 10,656.12 is: 15,984.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,720.08 : 47,580.12 = 10,656.12 : x
  2. Step 2: Convert to fraction form
    31,720.08/47,580.12 = 10,656.12/x
  3. Step 3: Cross multiply
    31,720.08x = 47,580.12 × 10,656.12
  4. Step 4: Simplify right side
    31,720.08x = 507,019,468.33
  5. Step 5: Solve for x
    x = 507,019,468.33/31,720.08
  6. Step 6: Final answer
    x = 15,984.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.